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| author | Alex Bennée <alex.bennee@linaro.org> | 2020-07-24 07:44:57 +0100 |
|---|---|---|
| committer | Alex Bennée <alex.bennee@linaro.org> | 2020-07-27 09:40:12 +0100 |
| commit | ad06ef0efbf7cafba5074a183fef1ad586f38caa (patch) | |
| tree | 96402a9217f1b906813c19ba1745daa8b08382f8 /util | |
| parent | 7d2d6522bbadfa8d9877e38bfa7413444fa64fbb (diff) | |
| download | qemu-ad06ef0efbf7cafba5074a183fef1ad586f38caa.zip qemu-ad06ef0efbf7cafba5074a183fef1ad586f38caa.tar.gz qemu-ad06ef0efbf7cafba5074a183fef1ad586f38caa.tar.bz2 | |
util: add qemu_get_host_physmem utility function
This will be used in a future patch. For POSIX systems _SC_PHYS_PAGES
isn't standardised but at least appears in the man pages for
Open/FreeBSD. The result is advisory so any users of it shouldn't just
fail if we can't work it out.
The win32 stub currently returns 0 until someone with a Windows system
can develop and test a patch.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: BALATON Zoltan <balaton@eik.bme.hu>
Cc: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Message-Id: <20200724064509.331-5-alex.bennee@linaro.org>
Diffstat (limited to 'util')
| -rw-r--r-- | util/oslib-posix.c | 15 | ||||
| -rw-r--r-- | util/oslib-win32.c | 6 |
2 files changed, 21 insertions, 0 deletions
diff --git a/util/oslib-posix.c b/util/oslib-posix.c index d923674..ad8001a 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -841,3 +841,18 @@ char *qemu_get_host_name(Error **errp) return g_steal_pointer(&hostname); } + +size_t qemu_get_host_physmem(void) +{ +#ifdef _SC_PHYS_PAGES + long pages = sysconf(_SC_PHYS_PAGES); + if (pages > 0) { + if (pages > SIZE_MAX / qemu_real_host_page_size) { + return SIZE_MAX; + } else { + return pages * qemu_real_host_page_size; + } + } +#endif + return 0; +} diff --git a/util/oslib-win32.c b/util/oslib-win32.c index 7eedbe5..3103046 100644 --- a/util/oslib-win32.c +++ b/util/oslib-win32.c @@ -828,3 +828,9 @@ char *qemu_get_host_name(Error **errp) return g_utf16_to_utf8(tmp, size, NULL, NULL, NULL); } + +size_t qemu_get_host_physmem(void) +{ + /* currently unimplemented */ + return 0; +} |